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To effectively process data gathered in mapping mission in Drone2Map photogrammetric software to generate an Orthomosaic, Digital Surface Model, and Digital Terrain Model.To understand to move from a geographic coordinate system in gathered imagery to producing a projected coordinate system output.To demonstrate cartographic skills by creating a series of cartographically correct outputs.
Open the Drone2Map software and log in. After logging in, answer the following questionsWhat are the available processing templates? Rapid, 2D Product, 3D Product, Batch, and Custom.Which processing template would you use to generate an orthomosaic from UAS imagery? You would use the 2D Product template to create an orthomosaic. Set up you project in Drone2Map. Project Name: 23Sept25_Avedician_TurffarmProject Location: I had it download to my external hard drive, as well as my temp folder. What was the default location of the project location? Users\iavedici\Documents\Drone2Map\Projects Import Mavic 2 Pro Images and select the folder containing your images. How many images have you used for your project? 152 Images Click “Create”Review the Contents panel on the left side? What layers are currently visible? 2D MapProject DataImage CentersBlue: EnabledGrey: DisablesRed: UncalibratedFlight LinesOrange LinesControlGreen Plus Sign: Ground Control PointBlue Plus Sign: Check PointElevation Surfaces World Elevation 3DTerrain 3DDescribe the purpose of each layer. Image Centers: Where the UAS stopped to take photos with the gimbal nadirFlight Lines: Flight path, the path the UAS took to take the photosGround Control Points:Where we took off and landed the UAS ***CONFIRMWhen you look at the map, what are these blue dots on the map mean? Enabled Image CentersWhat does orange lines represent? Flight lines or flight pathSelect a Basemap other than imagery so you can see your output contrast better. Which Basemap did you chose and why? I selected topographic because it allowed for some geographic reference without too much distraction. Click on “Options” in the Processing Tab. Go to Adjust ImagesI selected RTK or PPK data such we used that in our mapping mission. Besides these settings, what else are located in the window? General Dense matching, project resolution, keep intermediate products, hardware Adjust images Source image accuracy, tie point options, camera calibration, general adjust options 2D product Image collection, true ortho, DSM, DTM 3D product Create point clouds, create DSM textured meshes, create 3D textured meshes, general mesh settings Not using 3D Coordinate systems Image coordinate system, project coordinate system, coordinate system transformation Resources Image information Locations Project data Reset options, reset processing steps, reset symbology, delete project data, reset map data Go to 2D Products, check “Create DTM” under Digital Terrain Model.Click “Apply” then “OK.”Click “Start” to begin processing. What do the different colors mean that appear when processing the data? What does yellow color mean? In progress, checking, analyzingWhat does green color mean? Good/DoneWhat does red color mean? Warning, an error has occurred, processing has not happenedWhen you look at the DEM Products, the Digital Surface Model (DSM), is a surface model that includes buildings, vegetation, and other objects on the ground.Try to click and unclick the True Orth and the DEM Products; what do you see? Take screenshots and compare them.What does the Value in DSM mean?Difference in elevation on all of Earth’s surfaces. Viewed as the difference across the colors.Turn on DEM Products only, and what have you found? For example, you may see cars, roads, etc., in your True Ortho, but what does these show in DEM Products?True Ortho reveals what the world looks like and provides realistic imagery. When only turning the DEM Products, both DSM and DTM, you are provided with a model that only shows elevation values. With only DTM on, you see the elevation of the bare Earth’s surface. When only DSM is on, you are able to view the elevation values for all features, including trees and buildings. Look at the DTM part, what have you noticed? Why?As stated previously, when only viewing the DTM part, you see the elevation values of the Earth’s bare surface.After the data is processed, click on “Open in ArcGIS Pro.”In ArcGIS Pro create three maps Shaded DTM with Transparent DTM on top Shaded DSM with Transparent DSM on Top Orthomosaic
What are the differences between the DSM and the DTM? Does the DTM show more or less of any given featuresThe main differences between DSM and DTM is that DSM represents all of the elevation values of the Earth’s surface including trees, vehicles, buildings, etc. Meanwhile, DTM only represents the elevation values of the bare Earth’s surface. This means in DTM all other features are removed, and only the ground level, slops, and valleys remain. In conclusion, this reveals that DTM shows less of the Earth’s surface features. Do you note the quality of the DTM or DSM when looking at the flights you engage in over the blue area where you did opposing grid lines, versus the area of the red rectangle?
Drone2Map
Overview
In previous weeks, my team and I conducted a mapping mission where we collected data at the Purdue University Student Garden, . Our intent of flying the previous mapping mission was to collect data that we would later process in an online GIS software. In this weeks lab, we took the data collected from a previous mapping mission and processed it in Drone2Map to create a series of map products.
Objectives
Dataset used
For this lab, I used the data from the DJI Mavic 2 Pro Mapping Mission. In this mission, our objectives were to discover, identify, and implement different methods for grid-based mapping missions. In addition, we learned the fundamentals of Metadata and apply that understanding by applying it to our mission. Finally, we wanted to compare the capabilities of the Mavic 2 Pro with the Skydio 2+.
Resources
Steps and Questions
To successfully complete this lab, I completed the steps and answers below.
Figure 1. Only DEM Products
Figure 2. Only True Ortho
Figure 3. Both DEM Products and True Ortho
Deliverables
Maps
Figure 4. Shaded DTM with Transparent DTM on Top
Figure 5. Shaded DSM with Transparent DSM on Top
Figure 6. Orthomosaic
METADATA for the maps above
Location:
William H. Daniel Turfgrass Research and Diagnostic Center
1340 Cherry Ln, West Lafayette, IN 47907
Date: 09/23/2025
Vehicle: Mavic 2 Pro – ID: B serial ID - 1581F1633J27001H1380
Sensor: Gimbal - -90 degrees (nadir)
Battery: 4 lithium polymer smart batteries
Approval # (LAANC/COA/Waiver): Yes
Flight Information
Flight Number: 1
Takeoff Time: 1530
Landing Time: 1539
Altitude (m): 200ft AGL
Sensor Angle: -90 degrees
Overlap: 80%
Sidelap: 80%
Ground Control - no
System used (ie PPK, RTK, Aeropoints) - no
Coordinate System: GPS
Images Taken: 152
Weather
Cloud Cover: METAR says clear but site is cloudy 1500 ft AGL
Wind Direction: 190
Wind Speed: 8-16 knots gustijg
Temp: 26C
Crew
PIC: Venkata Devapatla
VO: Joe Kahi, Jacob Sieber
Data recorder – Isabella Avedician
Final Questions
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